Results 21 to 30 of about 7,679,023 (331)

Recent Advances in Indoor Localization via Visible Lights: A Survey

open access: yesSensors, 2020
Because of the limitations of the Global Positioning System (GPS) in indoor scenarios, various types of indoor positioning or localization technologies have been proposed and deployed.
A B M Mohaimenur Rahman   +2 more
doaj   +1 more source

In a Different Light [PDF]

open access: yes, 2003
This module develops the understanding that visible light is composed of a spectrum of colors of light from red to violet, extends the concept of a spectrum to include non-visible light through discovery, and develops tools and strategies for student ...

core   +2 more sources

High-Speed Indoor Navigation System based on Visible Light and Mobile Phone

open access: yesIEEE Photonics Journal, 2017
Visible light positioning (VLP) is widely believed to be a cost-effective answer to the growing demand for real-time indoor positioning. However, due to the high computational cost of image processing, most existing VLC-based systems fail to deliver ...
Junbin Fang   +7 more
doaj   +1 more source

Using Linear Interpolation to Reduce the Training Samples for Regression Based Visible Light Positioning System

open access: yesIEEE Photonics Journal, 2020
We put forward and experimentally demonstrate a second order machine-learning (ML) based visible-light-positioning (VLP) system using simple linear interpolation algorithm to reduce the training samples required in the ML algorithm.
Yu-Chun Wu   +8 more
doaj   +1 more source

Angle-of-Arrival (AOA) Visible Light Positioning (VLP) System Using Solar Cells With Third-Order Regression and Ridge Regression Algorithms

open access: yesIEEE Photonics Journal, 2020
We put forward and demonstrate a angle-of-arrival (AOA) based visible-light-positioning (VLP) system using quadrant-solar-cell (QSC) and third-order ridge regression machine learning (RRML) to improve the positioning accuracy.
Chong-You Hong   +9 more
doaj   +1 more source

Machine Learning Assisted Visible Light Sensing of the Rotation of a Robotic Arm

open access: yesIEEE Access, 2021
With the rise of LED (light-emitting diode)-based luminaires, artificial lighting has become a technology platform, which, besides providing illumination, also provides communication and positioning functionalities. Apart from this, most recently Visible
Kushal Madane   +4 more
doaj   +1 more source

Visible light in photodermatology

open access: yesPhotochemical & Photobiological Sciences, 2020
Until recently, visible light (VL) had been regarded to be without significant photobiologic effect on the skin. Updated research suggests that this is not the case and the measurable effect of visible light on the skin is being documented in all skin types.
Shanthi, Narla   +3 more
openaire   +2 more sources

Recent Developments in the Photochemical Synthesis of Functionalized Imidazopyridines

open access: yesMolecules, 2022
Imidazopyridines constitute one of the most important scaffolds in medicinal chemistry, as their skeleton could be found in a myriad of biologically active molecules.
Christine Tran, Abdallah Hamze
doaj   +1 more source

Recent advances in MOF-based photocatalysis: environmental remediation under visible light

open access: yesInorganic Chemistry Frontiers, 2020
Highly photoactive MOFs can be engineered via various strategies for the purpose of extended visible light absorption, more efficient generation, separation and transfer of charge carriers, as well as good recyclability.
Qi Wang   +4 more
semanticscholar   +1 more source

Visible light photocatalytic degradation of polypropylene microplastics in a continuous water flow system.

open access: yesJournal of Hazardous Materials, 2020
Microplastic pollution of water and ecosystem is attracting continued attention worldwide. Due to their small sizes (≤5 mm) microplastic particles can be discharged to the environment from treated wastewater effluents. As microplastics have polluted most
A. Uheida   +4 more
semanticscholar   +1 more source

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